Beyond Concordance Cosmology with Magnification of Gravitational-Wave Standard Sirens

Abstract

We show how future gravitational-wave detectors would be able of discriminating between the concordance LCDM cosmological model and up-to-date competing alternatives, e.g. dynamical dark energy models (DE) or modified gravity theories (MG). Our method consists in using the weak-lensing magnification effect that affects a standard-siren signal because of its travelling trough the Universe's large-scale structure. As a demonstration, we present constraints on DE and MG from proposed gravitational-wave detectors, namely ET and DECIGO/BBO.

5 pages, 2 figures, 1 table; accepted for publication in Physical Review Letters

References in corpus (8)

• New Hubble Space Telescope Discoveries of Type Ia Supernovae at z > 1: Narrowing Constraints on the Early Behavior of Dark Energy
• Bayes in the sky: Bayesian inference and model selection in cosmology
• Determination of Dark Energy by the Einstein Telescope: Comparing with CMB, BAO and SNIa Observations
• Cosmology with the lights off: Standard sirens in the Einstein Telescope era
• Fourth order gravity: equations, history, and applications to cosmology
• Probing modifications of General Relativity using current cosmological observations
• Reducing the weak lensing noise for the gravitational wave Hubble diagram using the non-Gaussianity of the magnification distribution
• Tracing the redshift evolution of Hubble parameter with gravitational-wave standard sirens

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• The relation between cosmological redshift and scale factor for photons
• Cosmology and the Early Universe